To understand the diagram, she realized, you first had to understand the —a small black box with two 12-pin connectors, labeled A and B . The diagram wasn’t a maze; it was a logic map.
| Pin # | Wire Color | Function | Polarity | Connection Point | |-------|------------|----------|----------|------------------| | 1 | Red | +12V Constant Power (Main) | Positive (+) | Battery positive or permanent 12V at ignition switch harness | | 2 | Black | Chassis Ground | Negative (-) | Clean, bare metal chassis ground (remove paint) | | 3 | Yellow | Ignition Input | Positive (+) | 12V switched ignition source (turns off during crank) | | 4 | White | Parking Light Output | Positive (+) (or Negative -) See note | (+) to parking light wire; (-) to relay for positive systems | | 5 | Orange / Brown | Ground When Armed (Starter Kill) | Negative (-) | Interrupts starter wire via a relay (see section 5) | | 6 | Blue | Dome Light / Instant Trigger (Negative) | Negative (-) | Door pin switch that grounds when door opens | cobra 4160 alarm wiring diagram
Cobra 4160 is a classic alarm system, and while specific legacy diagrams can be hard to find in a single download, the wiring follows a standard Cobra "A-series" architecture. Core Wiring Color Codes To understand the diagram, she realized, you first
When the alarm is disarmed, Terminal 87a passes the starter signal through. When armed, the Orange/Brown wire grounds Terminal 85, opening the circuit and killing the starter. Core Wiring Color Codes When the alarm is
Ensure you know your 4-digit PIN code. If the remote fails, you'll need to turn the ignition ON/OFF in sequence with this code to disarm the system. For a visual reference, you can find various Cobra Car Alarm System Wiring Diagrams on Pinterest or detailed Cobra Fitting Instructions on Scribd. wire colors
Two final wires completed the system: